Equivalence Principle: Einstein vs Strong

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Discussion Overview

The discussion centers on the differences between the Einstein equivalence principle and the Strong equivalence principle, exploring their formulations and implications within the context of general relativity. Participants also reference external sources for further clarification.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • Some participants inquire about the differences between the Einstein equivalence principle and the Strong equivalence principle.
  • One participant proposes a specific formulation of the Einstein equivalence principle, questioning if it can be stated such that "for every point in space time, always exist a chart/reference frame in which the metric in that point is Minkowski and its first derivative is null."
  • Another participant affirms the proposed formulation of the Einstein equivalence principle as valid.
  • External references are suggested for further reading, including a Wikipedia article and a work by Clifford Will.

Areas of Agreement / Disagreement

Participants generally agree on the need to clarify the distinctions between the two equivalence principles, but the discussion remains unresolved regarding the implications and interpretations of these principles.

Contextual Notes

Some assumptions regarding the definitions of the equivalence principles may not be fully articulated, and the discussion does not resolve the nuances of their formulations.

Andre' Quanta
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1-What is the different between the Einstein equivalence principle and the Strong equivalence principle?
2-Is it possible to formulate the Einstein equivalence principle in this way?
"For every point in space time, always exist a chart / reference frame in which the metric in that point is Minkowski and its first derivative is null"
 
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Another good reference is Clifford Will's "The Confrontation between General Relativity and Experiment" http://relativity.livingreviews.org/Articles/lrr-2014-4/fulltext.html . The Einstein equivalence principle is given in section 2.1, and the strong equivalence principle is given in section 3.1.
 
Last edited by a moderator:
Andre' Quanta said:
2-Is it possible to formulate the Einstein equivalence principle in this way?
"For every point in space time, always exist a chart / reference frame in which the metric in that point is Minkowski and its first derivative is null"

Yes.
 

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